Updating maven version to 4.5.3-SNAPSHOT
Updating maven version to 4.5.3-SNAPSHOT.
Updated release notes.
Merge branch 'hotfix-getprojectpropertyvalue-SOAP-3957' of github.com:SmartBear/soapui into maintenance

Conflicts:
	pom.xml
	soapui-installer/pom.xml
	soapui-maven-plugin-tester/pom.xml
	soapui-maven-plugin/pom.xml
	soapui/pom.xml